Lincoln's Mentor. Three miles west, birthplace of Mentor Graham, 1800-86, "The Man Who Taught Lincoln." Sixty years a teacher. Green County 1818-26. After Illinois voted down slavery, moved to New Salem, 1826. There, from 1831-37, as tutor and friend, he had incalculable influence on Abraham Lincoln, his public life. Graham died at 86, South Dakota. Reburied at New Salem, Ill., 1933.